Cover for vessels



removed.

UNITED STATES PATENT OFFICE.

SAMUEL J. VVILSOh AND NAHUM '1. WILSON, OF ROGERSVILLE, MICHIGAN.

COVER FOR VESSELS.

SPECIFICATION formingpart of Letters Patent No.'286,75 5, dated October 16, 1883,

Application filed June 16, 1883. (No model.)

To aZZ whom it may concern:

Be it known that we, SAMUEL J. WILsoN and NAHUM T. WILSON,-OfROg6ISVi116, in the county of Genesee and State of Michigan, have invented new and useful Improvements in Covers for Vessels; and we do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to certain new and useful improvements in the construction of covers for hollow vessels and the means employed for securing such covers to place.

The invention consists in the peculiar construction and application of expansion locking-arms, the outer ends of which engage with hooks or bails upon the vessel to which it is to be secured, all as more fully hereinafter set forth. 1

Figure 1 is a perspective View, showing our device as secured to and forming one head of a barrel. Fig. 2 is a cross-section of the head In the accompanying drawings, A repre= sents a head or cover, which is provided with an annular channel, a, upon its under face, such channel being designed to receix e any suitable packing, and which, when the device is in use, rests upon the chine of the barrel B, intended to be covered.

0 represents athreaded standard, rising from the center of the cover A, and to which it is rigidly secured.

D represents a triangular-shaped follower, which is sleeved upon the standard 0. This follower is connected to the threaded thumbnut E by hooks cl, which engage with the an nular channel 0 of the nut E, or in any such manner that the follower maybe raised or lowered upon the standard by turning the nut, as desired. In the three arms of the follower D are pivotally secured the inner ends of the looking arms or levers F, the outer ends of which pass through guide-loops 6 near the edge of the head. I

In practice the barrel is provided withhookears G, or other suitable devices, which pro- 16% beyond the end of the barrel. The head is placed over the end of the barrel, the chine entering the channel a, while the ends of the arms F engage with the hooks G. By then turning the nut E the follower D is depressed, causing the arms F to more firmly engage with the hooks, and the edge of the cover, acting as the fulcrum, compels such arms to act as levers in connection with the hook-ears, and crowd the head firmly upon the chine of the barrel, making a perfectly tight joint.

While we have described our device as applied to a barrel, we do not desire to confine ourselves thereto, as it is evident that there aremany vessels of varying shape to which it may be advantageously applied, and that it can be employed successfully in securing manhole and other covers to their positions.

It is also evident that but two locking-arms may be employed without departing from the spirit of our invention, and that the annular channel in the under face of the head may be dispensed with in many instances.

We are aware of Patents Nos. 277,001 and 211,980, and make no claim to the construction shown therein.

What We claim as our invention is'- The cover for vessels herein described, conby hooks d, which engage with said flange,

whereby the follower may be raised or lowered by turning said nut, substantially as described.

SAMUEL J. WILSON. NAHUM T. WILSON. Witnesses:

A. G. Brsnor, JNo. H. WILDER. 

